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A weather bomb is the name for a low pressure system whose central pressure plummets as part of a process known as explosive cyclogenesis.

But the Met Office has issued a yellow level warning for strong southwesterly winds in parts of southern England and South and West Wales from 4am on Saturday.

Chief forecaster Frank Saunders said: “A very deep area of low pressure is expected to bring strong winds to southern areas early on Saturday morning.

“During the morning and early afternoon these winds will transfer east and slowly change direction as they will become westerly and eventually northwesterly toward the end of the warning period.

“Gusts exceeding 50 mph are expected widely within the warning area, with gusts of around 70 mph along exposed coastal areas. These are expected to coincide with high tides, leading to locally dangerous conditions.”